JSON Formatter
Beautify, minify and validate JSON online for free.
About this tool
JSON (JavaScript Object Notation) is the standard data format for APIs, configuration files, and web applications. This JSON formatter helps you visualize and clean JSON data for debugging, development, or presentation purposes. All processing happens locally in your browser — no data is uploaded.
How to use the JSON Formatter
- Paste your raw or minified JSON into the input area
- Click the Beautify button to format with proper indentation
- Use Minify to compress JSON for production use
- Validate button checks for syntax errors and shows the exact location of problems
Features
- Beautify & Minify JSON instantly
- Syntax validation with error reporting
- Copy formatted output to clipboard
- Works offline, no server required
- 100% client-side processing
Frequently asked questions
Is this JSON formatter free?
Yes. The DevUtils JSON formatter is completely free and does not require registration.
Does it format JSON online?
Yes. All formatting happens directly in your browser — your JSON is never sent to any server.
Can I validate JSON with this tool?
Yes. Click the Validate button to check syntax and see exactly where errors are located.
Is there a minify option?
Yes. Use the Minify button to compress JSON into a single line for production use.